How to configure maven hbm2hbmxml and hbm2java to run one after the other in mvn clean install

Question

I need to be able to call mvn clean install and have maven call hibernate3:hbm2hbmxml to generate the mapping files from a database and after than call hbm2java to get the Java files and then have maven compile those newly created Java files. Has anyone done this before?

Thanks

Answer 1

If you want to have your model java files (obtained by reveng) compiled, you don't need to run hbm2hbmxml.

plugin configuration:

<build>
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>hibernate3-maven-plugin</artifactId>
            <version>2.2</version>
            <configuration>
                <components>
                    <component>
                        <name>hbm2java</name>
                        <outputDirectory>src/main/java</outputDirectory>
                        <implementation>jdbcconfiguration</implementation>
                    </component>
                </components>
                <componentProperties>
                    <revengfile>/src/main/resources/reveng/model.reveng.xml</revengfile>
                    <propertyfile>/src/main/resources/META-INF/hibernate.properties</propertyfile>
                    <jdk5>true</jdk5>
                    <ejb3>true</ejb3>
                </componentProperties>
            </configuration>
            <dependencies>
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>5.0.8</version>
                </dependency>
                <dependency>
                    <groupId>cglib</groupId>
                    <artifactId>cglib-nodep</artifactId>
                    <version>2.1_3</version>
                </dependency>
            </dependencies>             
        </plugin>
    </plugins>
</build>

hibernate.properties :

hibernate.dialect = org.hibernate.dialect.MySQLInnoDBDialect
hibernate.connection.driver_class = com.mysql.jdbc.Driver
hibernate.connection.url = jdbc:mysql://localhost:3306/YOUR_DB
hibernate.connection.username = yourUsrName
hibernate.connection.password= yourPwd
hibernate.default_schema = YOUR_DB

model.reveng.xml :

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-reverse-engineering SYSTEM "http://hibernate.sourceforge.net/hibernate-reverse-engineering-3.0.dtd">
<hibernate-reverse-engineering>
    <table-filter match-name=".*" package="your.package.here" />
</hibernate-reverse-engineering>

you fire this with:

mvn clean hibernate3:hbm2java compile

if you want it to be fired just with:

mvn clean compile

add the "executions" tag in your plugin definition

            <executions>
                <execution>
                    <phase>compile</phase>
                    <goals><goal>hbm2java</goal></goals>
                </execution>
            </executions>

Answer 2

Neither of the two answers worked for me out of the box. After a bit of research, I was able to generate POJOs from a database. Hope this fast tracks someone.

Simply generate the java files - no mapping files generated.

Define your database connection in src/test/resources/reveng/hibernate.cfg.xml. Using the test branch so these files are not copied into the distributable artifact.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory name="pmSessionFactory">
        <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <!-- Note that we are pointing directly at the catalog so we can use 
             unqualified table names -->
        <property name="hibernate.connection.url">jdbc:oracle:thin:@server.domain.com:1521:catalog</property>
        <property name="hibernate.connection.password">login</property>
        <property name="hibernate.connection.username">****</property>
        <property name="hibernate.default_schema">PM</property>
    </session-factory>
</hibernate-configuration>

Create a list of tables you want to import. Again in the test branch: src/test/resources/reveng/model.reveng.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-reverse-engineering PUBLIC 
  "-//Hibernate/Hibernate Reverse Engineering DTD 3.0//EN" 
  "http://hibernate.sourceforge.net/hibernate-reverse-engineering-3.0.dtd" >

<hibernate-reverse-engineering>
  <!-- This assumes your database connection is pointing to the proper catalog -->
  <!-- To get all tables in the named schema, use the following 
       <schema-selection match-schema="PM" />
  -->
  <!--  to get only the named tables -->
  <schema-selection match-schema="PM" match-table="PM_PROPERTY"/>
  <schema-selection match-schema="PM" match-table="PM_APPLICATION"/>
  <schema-selection match-schema="PM" match-table="PM_PROPERTY_TYPE"/>
</hibernate-reverse-engineering>

Add the hibernate3 maven plugin to your pom

<build>
  <plugins>
    ...
    <plugin>
      <groupId>org.codehaus.mojo</groupId>
      <artifactId>hibernate3-maven-plugin</artifactId>
      <version>2.2</version>
      <configuration>
        <components>
          <component>
            <name>hbm2java</name>
            <outputDirectory>src/main/java/com/me/examples/pm/data</outputDirectory>
            <implementation>jdbcconfiguration</implementation>
          </component>
        </components>
        <componentProperties>
          <!-- Storing the reveng files in the test branch means we are not 
               deploying connection information-->
          <revengfile>src/test/resources/reveng/model.reveng.xml</revengfile>
          <configurationfile>src/test/resources/reveng/hibernate.cfg.xml</configurationfile>
          <jdk5>true</jdk5>
          <ejb3>true</ejb3>
        </componentProperties>
      </configuration>
      <dependencies>
        <dependency>
          <groupId>com.oracle</groupId>
          <artifactId>classes12</artifactId>
          <version>10.2.0.1.0</version>
        </dependency>
        <dependency>
          <groupId>cglib</groupId>
          <artifactId>cglib-nodep</artifactId>
          <version>2.1_3</version>
        </dependency>
      </dependencies>
    </plugin>
  </plugins>
</build>

Run maven

mvn hibernate3:hbm2java